Wiring a 3 way light switch. If you intend to add multiple lights with a 3 way switch use the 3 way switch for multiple lights diagram.

Alternate 4 Way Switch Wiring Electrical 101
3 way lighting wiring diagram. If you are familiar with wiring a two way lighting circuit then the addition of an extra switching point will not be much of a problem. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. 3 way switch wiring diagram depicting all wires in the ceiling junction box. 3 way switch wiring diagram line to light fixtureline voltage enters the light fixture outlet box. A three way switch is fundamentally different in its operation from a regular two way switch. Old multi point radial lighting diagram using junction boxes.
3 way light switching new cable colours 3 way light switch old cable colours. Wiring multiple lights on a 3 way switch. You must completely forget about the notion of a switch being a simple openclosed circuit and look at the diagram of the circuitry of this modern alternative. 3 way switches wiring diagram 3 switch one light control diagram three way lighting circuit this video shows how to wire a three way lighting circuit this means that you can have three separate. The 3 way lighting circuit which is often referred to as the two way and intermediate lighting circuit is a common arrangement usually found in large houses. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
As with the other diagrams on this page more lights can be added by duplicating the wiring arrangement between the fixtures. No longer allowed after 2011 nec if no neutral wire in switch boxes 3 way switch wiring diagram light fixture between switchesline voltage enters the first 3 way switch outlet box light fixture is located between switch boxesno longer allowed after 2011 nec if no neutral wire in switch boxes. 3 way light switching new cable colours 3 way light switch old cable colours. Wiring 2 lights and 3 way switches. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw.
In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. Old multi point radial lighting diagram using junction boxes. Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption. This diagram illustrates another multiple light circuit controlled by 3 way switches. Here the source and the fixtures come before the switches. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram.
The steps above describe installing a 3 way switch and provide a 3 way switch diagram utilizing one light fixture.